Conveyer



July 2, 1929. c. BROWN 1.719.585

coNvmER Filed April 6, 1927 5 Sheets-Sheet 1 THTTIHII July 2, 1929. Q BROWN. 1.712.585

CONVEYER Filed April 6, 1927 3 Sheets-Sheet 2 C. BROWN CONVEYER July 2, 1929.

Filed April 6, 1927 V Fig.5.

' 3 Sheets-Sheet 3 Immm Patented July 2, 1929.

UNITED STATES PATENT OFFICE.

CAMPBELL BROWN, 01? BELFAST, NORTHERN IRELAND.

. CONVEYER.

Application filed April 6, 1927, Serial No. 181,572, and in Great Britain February 19, 1927.

This invention relates to conveyers for bakers ovens and refers to that type of conveyer having goods-carrying members such as plates, trays, shelves (hereinafter 5 referred to simply as plates for brevity) carried by and having one end only attached to movable endless chains, belts, or equivalent (hereinafter referred to simply as conveyer chains for convenience of description) and having means for maintaining said plate horizontal. V

A conveyer for bakers ovens according to this invention comprises broad conveyer chains adapted to move in a circuitous path, plates attached at. one end only to said conveyer chains, a member fixed to said plate, a member adapted to move synchronously with said conveyer chains and means on one Q of said members adapted to engage with the .other member to maintain the plates horizontal.

The plates are preferably maintained horizontal by means of movable chains, belts, or equivalent (hereinafter referred to simply as a supporting chain fbr convenience of description) The plates are provided with extensions and these extensions are preferably connected to the supporting chains by a pin or projection (hereinafter termed a pin for convenience of description) on "one part engaging with an'opening in the other part;

7 means being provided for disengaging the pin or projection from the opening so as to cause the plate to tilt and for subsequently returning the plate to its horizontal position andre-engaging the pin or projection. In a particular embodiment, a conveyer according to this invention comprises the combination with a series of plates located at intervals on and carried by the chains of the conveyers, of chains moving through a similar path to that of the conveyer chain and carrying a number of pins or projections, or slots, one or two for each plate, means on said plates adapted to be engaged by said pins or projections so that the plates are maintained horizontal thereby, means for disengaging said pins or projections so as to cause the plate to tilt and thereafter reengaging the pins or projections and means for returning the plates to their horizontal position after they have been tilted.

Further, there is combined with the conveyer, an oven through which the plates and in the same direction as these.

move circuitously the plates being carried by blocks slidable in guide-ways in the oven sides and adapted to be maintained horizontal, the oven sides being provided with openings at the ends connecting said guideways to allow for movement of the blocks and means for closing said openings.

Referring to the drawings:

Fig. 1 is a fragmentary side elevation of one form of conveyer.

Fig. 2 is a plan view thereof.

Fig. 3 is a sectional end elevation thereo on line IIIIII in Fig. 1.

Fig. 4 is a fragmentary plan view of the supporting chain drawnto an enlarged scale and shown partly in section.

Fig. 5 is a fragmentary plan view of a modified form of conveyer.

Figs. 6 and 7 are a fragmentary plan view and elevation respectively of a further modi fied form. i

Similar reference characters denote similar parts throughout the different views.

In the drawing the plates 1 are provided with trunnions 2 extending laterally at one end only, of the plates and being pivotally mounted upon the conveyer chains 3. In order to keep the plates horizontal, extensions 4 rigidly fixed upon the trunnions 2 at one-side and having recessed ends 5, are engaged by pins 6 upon the supporting chain 7.

This supporting chain is movable through a a similar path to that of the conveyor. chains The engagement of the pins 6 in the recessed ends 5 of the extensions 1 thus serves to maintain the plates horizontal. In order that the plates can be caused to tilt for discharging the goods, the apparatus shown in Figs. 1-4 is employed in whicha guide frame 8 having an inclined portion 9 is provided with which the pins 6 engage; these pins being slidably mounted in the supporting-chain 7. The guide frame is carried by a lever frame 36 and an upper frame 37. A spring 12 (Fig. 4) is located between a shoulder 18 on the chain and a flange 19 on the pin 6, said spring tending to maintain the pins in their projecting position. Rollers 10 on the pins 6 engage with the guide frame so that as the pin is carried along by the supporting chain it reaches the inclined portion 9 where it is pulled against the action of the spring 12 out of engagement with the extension 4 thereby allowing the plate to tilt v bar 11. Thereafter the plate is carried round by the conveyer chain and is, by the co-operation of the extension 4 with the contact bar 11, gradually returned to its horizontal position. Moreover, the pin 6 will also be carried round by the supporting chain and as the plate 1 and extension 4 regain the horizontal position, the pin is allowed by an inclined portion 9 to be moved by the spring 12 into engagement with the extension 4: so that it is again maintained horizontal thereby.

In Fig. 5 the arrangement is similar except that the pins 6 are fixed to the chain 7 and the guide frame is in this case dispensed with. In this case there will be no tilting, the plates always being maintained horizontal.

At Figs. 6 and 7 a further modification is shown in which the pins 6 are fixed to the extensions 4t and engage in slots 20 in the chains 7. Again in this case there will be no tilting of the plates.

In all these cases the chains are driven at the same speed by means of the two meshing pinion wheels 13, 14, one, 13, of which drives the shaft 15 which, in turn, drives the chain sprocket wheel 16 of the supporting chain 7 and the other-wheel 14 driving the shaft 18 on which is mounted the chain sprocket wheels 17 of the conveyer chain 3.

I claim 1. A conveyer comprising conveyerchains, a series of plates located at intervals along and connected at one end only tothe conveyer chains, supporting chains moving through a similar path to the conveyer chains, pins on said supporting chains, means on said plates adapted to be engaged by said pins so that the plates are maintained horizontal thereby, means for disengaging said pins so as to cause the plates to tilt, means for returning said plates to their horizontal position after they have been tilted, and means for re-engaging said pins.

2. A conveyer comprising conveyer chains, a series of plates located at intervals along said chains, trunnions connecting one end only of said plates to the conveyer chains, extended members on said trunnions, a supporting chain moving through a similar path to that of the conveyer chains, pins on said supporting chain adapted to engage said ex tending members so as thereby to maintain the plates horizontal, means for disengaging said pin so as to cause the plates to tilt, means for returning the plates to their horizontal position after they have been tilted and means for re-engaging said pin.

3. A conveyer comprising conveyer chains, a series of plates located at intervals along said chains, trunnions connecting one end only of said plates to the conveyer chains, extended members on said trunnions, a supporting chain moving through a. similar path to that of the conveyer chains, inter-engaging devices on said extending members co-operating to maintain the plates horizontal, means for disengaging said devices, so as to cause the plates to tilt, means for returning the plates to their horizontal position after they have been tilted and means for re-engaging said devices.

4. A conveyer comprising conveyer chains, a seriesofplates located at intervals along said chains, trunnions connecting one end only of said plates to the conveyer chains, extended men'ibers on said trunnions. a supporting chain moving through a similar path to that of the conveyer chains, spring pressed members co-operating with said supporting chain and extending members to maintain the plates horizontal, means for retracting said spring pressed members at a predetermined point to cause the plates, as they reach said point, to tilt and means for restoring said plates to their horizontal position.

.5. A conveyer comprising conveyer chains, a series of plates located at intervals along SZLlClCl'ltllIlS, trunnions connecting one end only of said plates tothe conveyer chains, extended members on said trunnions, a supporting chain moving through a similar path to that of the conveyer chains, retaining members co-operating with said supporting chain and extending members .to maintain the plates normally horizontal, means for retract- -ing said retaining members at a predetermined point so as to cause theplates, as they reach said point to tilt, said means holding the retaining members in their retracted position until they reach a predetermined point and restoring means for bringing the plates and their extending members back to their normal horizontal position.

In testimony whereof I aflix my signature.

CAMPBELL BROWVN. 

